198799061770 has 16 divisors (see below), whose sum is σ = 357844353768. Its totient is φ = 79518281920.

The previous prime is 198799061753. The next prime is 198799061801. The reversal of 198799061770 is 77160997891.

It can be written as a sum of positive squares in 4 ways, for example, as 195272958609 + 3526103161 = 441897^2 + 59381^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 638352 + ... + 897268.

Almost surely, 2^198799061770 is an apocalyptic number.

198799061770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198799061770 is a deficient number, since it is larger than the sum of its proper divisors (159045291998).

198799061770 is a wasteful number, since it uses less digits than its factorization.

198799061770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335705.

The product of its (nonzero) digits is 12002256, while the sum is 64.

The spelling of 198799061770 in words is "one hundred ninety-eight billion, seven hundred ninety-nine million, sixty-one thousand, seven hundred seventy".